"extra","group","ID"
0.7,"1","1"
-1.6,"1","2"
-0.2,"1","3"
-1.2,"1","4"
-0.1,"1","5"
3.4,"1","6"
3.7,"1","7"
0.8,"1","8"
0,"1","9"
2,"1","10"
1.9,"2","1"
0.8,"2","2"
1.1,"2","3"
0.1,"2","4"
-0.1,"2","5"
4.4,"2","6"
5.5,"2","7"
1.6,"2","8"
4.6,"2","9"
3.4,"2","10"